How do I compare two strings in python

Question

I have two strings like  string1  abc def ghi    and  string2  def ghi abc    How to get that this two string are same without breaking the words

User · Answer

Seems question is not about strings equality, but of sets equality. You can compare them this way only by splitting strings and converting them to sets:

s1 = 'abc def ghi'
s2 = 'def ghi abc'
set1 = set(s1.split(' '))
set2 = set(s2.split(' '))
print set1 == set2

Result will be

True

User · Answer

If you want a really simple answer   s 1    abc def ghi  s 2    def ghi abc  flag   0 for i in s 1      if i not in s 2          flag   1 if flag    0      print  a    b   else      print  a    b

User · Answer

Try to covert both strings to upper or lower case  Then you can use    comparison operator

User · Answer

If you just need to check if the two strings are exactly same   text1    apple   text2    apple   text1    text2   The result will be  True   If you need the matching percentage   import difflib  text1    Since 1958    text2    Since 1958   output   str int difflib SequenceMatcher None  text1  text2  ratio   100     Matching percentage output will be    95

User · Answer

I think difflib is a good library to do this job       gt  gt  gt import difflib      gt  gt  gt  diff   difflib Differ       gt  gt  gt  a  he is going home      gt  gt  gt  b  he is goes home      gt  gt  gt  list diff compare a b            h      e             i      s             g      o      e      s    - i    - n    - g             h      o      m      e        gt  gt  gt  list diff compare a split   b split               he      is    - going      goes      home

User · Answer

For that  you can use default difflib in python  from difflib import SequenceMatcher  def similar a  b       return SequenceMatcher None  a  b  ratio     then call similar   as  similar string1  string2    it will return compare as  ratio    threshold to get match result

User · Answer

You can use simple loops to check two strings are equal   But ideally you can       use something like return s1  s2  s1    hello  s2    hello   a      for ele in s1      a append ele  for i in range len s2        if a i   s2 i           a pop   if len a  gt 0      return False else      return True

User · Answer

This is a pretty basic example  but after the logical comparisons      or string1 lower      string2 lower    maybe can be useful to try some of the basic metrics of distances between two strings    You can find examples everywhere related to these or some other metrics  try also the fuzzywuzzy package  https   github com seatgeek fuzzywuzzy    import Levenshtein import difflib  print Levenshtein ratio  String1    String2    print difflib SequenceMatcher None   String1    String2   ratio

User · Answer

I am going to provide several solutions and you can choose the one that meets your needs   1  If you are concerned with just the characters  i e  same characters and having equal frequencies of each in both the strings  then use      join sorted string1   strip         join sorted string2   strip     2  If you are also concerned with the number of spaces  white space characters  in both strings  then simply use the following snippet   sorted string1     sorted string2    3  If you are considering words but not their ordering and checking if both the strings have equal frequencies of words  regardless of their order occurrence  then can use   sorted string1 split       sorted string2 split      4  Extending the above  if you are not concerned with the frequency count  but just need to make sure that both the strings contain the same set of words  then you can use the following   set string1 split       set string2 split

User · Answer

Something like this   if string1    string2      print  they are the same    update  if you want to see if each sub-string may exist in the other   elem1    x for x in string1 split    elem2    x for x in string2 split     for item in elem1      if item in elem2          print item

User · Answer

Equality in direct comparing   string1    sample  string2    sample   if string1    string2       print  Strings are equal with text      string1    amp     string2  else       print   Strings are not equal     Equality in character sets   string1    abc def ghi  string2    def ghi abc   set1   set string1 split       set2   set string2 split        print set1    set2  if string1    string2       print  Strings are equal with text      string1    amp     string2  else       print   Strings are not equal

User · Answer

open both of the files then compare them by splitting its word contents   log file A  file A txt   log file B  file B txt   read A open log file A  r   read A read A read   print read A  read B open log file B  r   read B read B read   print read B  File A set   set read A split       File A set   set read B split       print File A set    File B set

User · Answer

gt  gt  gt  s1  abc def ghi   gt  gt  gt  s2  def ghi abc   gt  gt  gt  s1    s2    For string comparison  False  gt  gt  gt  sorted list s1      sorted list s2     For comparing if they have same characters   True  gt  gt  gt  sorted list s1               a    b    c    d    e    f    g    h    i    gt  gt  gt  sorted list s2               a    b    c    d    e    f    g    h    i

User · Answer

If you want to know if both the strings are equal  you can simply do  print string1    string2   But if you want to know if they both have the same set of characters and they occur same number of times  you can use collections Counter  like this   gt  gt  gt  string1  string2    abc def ghi    def ghi abc   gt  gt  gt  from collections import Counter  gt  gt  gt  Counter string1     Counter string2  True

[python] How do I compare two strings in python?

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